My Mom has said that she lost he sense of taste lately. She used to be able to taste fresh fish and fruit better. Now she felt some food has no taste and didn't enjoy it. My Dad enjoys the food a lot. She is 84 now. I am wondering if vascular dementia could have symptoms like tasting problem? I know that one memeber mentioned that smelling is affecting the Alzheimer's patient? My Mom is not diagnosed with dementia yet but the doctor warns that no more mini-stroke or she would get vascular dementia. Maybe her taste gets less and less as she is older? My Dad is 85 and he is fine with food.
Can your mom still smell? That's one of the signs of Alzheimer's since its in a part of the brain that tends to be attacked early (and smell also can impact how things taste). I found that my mom got to the point that the only tastes she liked were sweet (especially cookies, ice cream and smoothies).
I'm not sure about whether taste is affected with vascular dementia, but you may want to ask your mother's doctor.